Machine for stippling



Filed June 13 1921 3 Sheets-Shad l lllll! INVENTOR Char/e5 Gjfewzpaon BY godsw ATTORNEY July 15 1924. 1,501,048

C. G. HAMPSON MACHINE FOR STIPPLING Filed June 13, 1921 3 Sheets-Sheet 2 m u p! EWYWT Wm g 6 98 T an! INVENTOR gmgOvziw ATTORNEY C. G. HAMPSON MACHINE FOR STIPPLING July 15 1924.

Filed June 13 1921 3 Sheets-Shoot 5 INVENTOR Twigs Glfafigosan BY of ATTORNEY- Patented July 15, 1924.

UNITED STATES PATENT orncs.

CHARLES G. HAMPSON', OF NEW YORK, N. Y.

MACHINE FOB' STIPPIJNG'.

. Application filed June 13, 1921. Serial No. 477,009.

cation is not only intended to cover paper,

cloth, awning materials, ceiling canvas, and like flexible material usually stipple, but is used in a more generic sense to cover any material to which the pre-treated surface of which the method disclosed is applicable.- 1 The primary object of the present disclosure is to provide an improved form of machine for stippling stippled surface by a simple rolling operation and the incidental elimination of the objections inherent in the 01d methods of hammering or tap ing the surface undertreatment with a bristle brush form of implement.

Another object of the present disclosure isto provide. a simple form of machine by means of which the method can be practiced economically and at a s eed to take care of fabrics fed thereto at igh speed and to provide a simpleform of adjustment by means of which the intensity of, engagement between the stippling rollers and the coated surface can be' re ulated to that nicety which will give the desired effects and at the same time compensate for an wear on the rollers during their prolonge operation.

The present disclosure features another use for rollers of the type under discussion. It is found that the soft sponge rollers herein disclosed can carry and discharge the coating material used in the stippling method herein described. 4 a

Accordingly another object of the inven tion is to provide an improved means for applying coating or coloring material to a surface so that the material will be spread over the surface, smoothly, uniformly and evenl or. at er evidence of thecoating applying instrumentality. p

Still another object of the invention is to provide a color applying or coating afand without leaving brush marksfecting. tool which can be readily cleaned with a minimum loss of the color material.

Various other objects and advantages of the invention will be in part obvious from an inspection of the accompanying drawings and in part, will be more fully set forth in the followin particular description of one form of mec anism embodying my invention, and the invention also consists in certain new and novel features of construction and combination of parts hereinafter set forth and claimed.

Referring to the accompanying drawin%s:

igure 1 is a view side elevation of a preferred embodlment of a machine showing one means for practicing the method featured in this disclosure. andillustrating a preferred embodiment of the, physical aspects of the, disclosure, parts being broken away to show structure in rear of the broken away parts g I Figure 2 is a vertical sectional view taken on the broken line 2-2 of Figure 3; and

Figure 3 is a plan view looking down upon the disclosure in Figure 1 and with one of the rollers broken away in a horizontal lane.

It wlll be understood in general that the device resembles the usual color applying machine, except for the substitution of soft rubber sponge-faced rollers in place of the usual hard, smoothfaced rubber rollers.

In the drawings there is shown an endless belt 10, referably in the form of-a thick rubber blanket passed about end drums, one of which is shown at 11, and one of which is power driven so as to drive the belt which carries the fabric to be stippled and therethrough drives the several rollers constituting the main feature of this disclosure.

At the receiving end of the belt there is provideda frame v12 in which the drum 11 1s journalled and on which frame is positioned a pair of upstanding bracket guiding frames 13 and 14 ositioned on opposite sides of the belt as s own more in Figure 3. The construction 0 13 and 14 is similar so that the descnptlon of one side of the belt will correspond in general with the description of the construction on'the oppositeside. The bracket iding frames 13 each include a pair 0 upparticularly the frames standing posts 15 and 16 on which are slidably mounted a longitudinall extend ng bracket 17 This bracket inclu es a casting and a central box-like portion 18 between the posts 15 and 16 and a pair of oppositely extending overhanging arms 19 and 20.] The brackets are raised simultaneously by. means of lifting cams 21 carried on av transversely extending shaft 22 and in operative engagement with rollers 23 de pending from the underside of the central portion 18. The shaft 22 is provided at one end with a crank "handle 24.

From the construction shown in Figurel it is understood that the lowering of the crank arm from the osition shown in this figure, will tend to raise the bracket against the resistance of depressing springs 25 positioned on the posts 15 and 16 and downon top of the brackets. o

A stippling roller 25f mounted upon a. shaft 26 is journalled at opposite ends n the central portion 18 of the two brackets. .To

provide for vertical adjustment of opposite ends of the shaft 26 these ends are each supported in a vertically adjustable saddle27 which includes a nut 28 movable vertically on a screw 29 in turn controlled by a hand wheel 30 extending above the central portion 18. It isa feature of this disclosure to minimize resistance to rotary movement of the rollers and-"for this reason the shaft 26 is shown mounted in anti-friction bearings 31. In order to ermit the ready demounting of theshaft t e opposite endsare shown located in bearings which can be readily re-,

moved from the saddle and which are locked in lace by means of a keeper 32.,

ositioned between the stippling roller 25 and the receiving end of the belt is a color appl in roller 33 which engages the fabric on the en; in vertical alignment with the belt drum 11. In operation the roller 33 is adjusted so as to be in relatively firm bearing .enga ement against the fabric to be coated. (%olor is a plied to the roller 33 by means ofa color ro er 34 working in a color containing box 35 of conventional form. The roller 33 is mounted upon a shaft 36 opposite ends of which are mounted for vert cal movement in a manner slightly different from the form described in connection with the mounting of the stippling roller shaft 26. Referring to the form of this modified bearing at the ri ht hand side of Fi re 2 it is noted that the shaft is rotatabfi mounted in a bearing block 36 which has a nut 37 working on the screw 38 in turn 1 controlled by the hand wheel 39. The nut 37 is held against rotary movement by means of the pin 40 enga 'ng. in a longitudinally extending slot 41 ormed in the nut.

A stipple modifying roller 42 is journalled in the opposed bracket arms 19 in a manner similar to the description of the mounting bearing tled with what may for the color applying roller 33. It is to be understood that the roller 42 is in relatively where a straight, uniform stipple is desired but it is within the scope of t e present disclosure to combine the stipple with other effects and for this purpose the stippling roller 25, as shown in Figure 3, sli htl modified so as to show an insert 43 o fe t desi ned to apply to the coated fabric a soli color of any desired design as is usual in cloth printing operations.

It will be understood that the several roll-- ers are of the same general design and'each includes a central cylindrical core 44 preferably of wood on which is stretched or glued, a relatively thick layer, usually about two inches of an ordinary black sheet rubber sponge. The character of sponge selected, that is, its resiliency, porosity and composition will depend upon the character of the stippled effect desired; In pre aring the rollers it is usual'to mount the exible, porous peripheral face of the -sponge like work face in position on the core and'then buff the work face so as to bring it into cylindrical form, in so far as this is prac tlcally possible.

In operation, and assuming that the parts have been properly adjusted, a strip of fabric, such as wall paper'or awning cloth, is fed the machine is started in operation by causmg the belt to move. The fabric is drawn in between the belt and color applying rollread roller, in that the color is spread over the engaged surface more evenly; there is less loss of color in the brush and, accordingly the brush may be more readily cleaned at the'termination of'the coloring operation. It is further suggested that where more than one color is to be a plied a multiplicity of color rollers may e utilized to contact with the fabric, one after the other, by obvious modifications of the machine disclosed. As the coating passes under the stippling roller 25' it is stippled or motbe called a rough effect, that is, in which the contrast in shades is more intense than in the finished product after it has passed the modifying rollen 42. As the stippled surface passes beneath the modifying roller 42 the relatively rough stipple istoned down so that the contrastsare less vivid and there is produced an extremely pleasing and uniform of stipple or mottle effect. It is of v belt, means course obvious .that the stippled fabric may pass beneath even another roller to further modify the stipple and it is assumedthat the, passing'of the fabric under a sufiicient number 0 down-the contrasts and so modify the stipple as to give it practically a fiat effect.

,Theeffect produced can be modified materially by the adjustment of the stippling rollers with reference to the fabric under treatment. In order to maintain-uniformity of effect it is obvious that the rollers must be adjusted to take up for wear. Again care must be exercised to create such an .intensit of engagement between the coated sur ace .and the several stippling rollers. While a relatively light contact is featured, the bearing must be sufiicient to maintain a positive contact and; 'onthejother hand there must not be such a high ressure as will cause the worksurfaceio qth'c rollers to lose its. sponge-like characteris tics. 1

. While I have shown and described, and

have pointed out im the annexed claims,

certain novel features of my invention, it will be understood that various'omissions, substitutions and changes in the form and details of the device illustrated and in its operation may bemade by those skilled in the art without departing from the spirit of the-invention.

Having thus described) my invention, I claim 1. In a stippling machine, the combination withv a belt for carrying the fabric to be stippled. a stippling roller mounted for rotary movement and with its axis across the line of movement of the belt, said roll: er being operatively disposed to be in light. bearing enga ement with the fabric on the for adjusting the relative p'o-' sition of the belt and the, axis of rotation of the roller thereby to regulate the intensity of engagement between the roller and the fabric under treatment and a stipple modifying roller operatively disposed to mpilify the effect produced by the stippling ro er.

2. In a stippling machine, the combination with a belt adapted to carry the material to be stippled, three rollers disposed with their axis parallel and with their peripheral surfaces in bearing engagement with the belt, said rollers identified in order in the direction of travel of the belt as a color applying roller for applying a coating to the material, a stippling roller for stippling the color and a stipple modifying roller for smoothing out the stippled efi'ect.

3. In a stippling machine, the combination with a belt adapted to carry the material to be stippled, three rollers disposed with their rollers will continue to tone axis stand and with their peripheral surfacesiinbearing engagement with'the belt, saidrollers identifiedin order in the direction of travel of the belt as a color applying .material, a stipp ing roller, and a stipple modifying roller for; smoothing out the "stipped effect and a single control for simultaneously modi ing the position of all of said rollers relat veto the belt.

4.. In a stippling machine, the combination with a belt adapted to carry the material to be stippled, three rollers'disposed with their axisparallel-and'with their peripheral surfaces in bearing engagement with. the belt,

said rollers identified in order in the direction of travel of the beltas a color applying roller for applying a stippled coating to the material, a stippling rol er, a stipple modifying roller forv smoothing out the stippledf effect, a single control for simultaneously modifying the osition of all of said rollers relative to the. elt and means for adjusting each roller relative to' the belt and independently of the adjustment provided by said single controL- I 5. In a stippling machine, the combination with a carrying belt, two idler rollers disposed with "their axis parallel and with their penipheral surfaces in bearing engagement with and rotated by the material to be stippled and carried by the belt, the surfaces of each of said rollers defined by a. spongelike flexible material.

6. In a stip ling machine, the combination with a belt, of a pair of transversely spaced apart guiding frames, a bracketmounted in each frame for vertical movement, a plurality of stippling rollers, each mounted for rotarymovement at opposite ends in said brackets and adapted to have their peripheralsurface engage material carried b the belt, and a manually actuated contro for simultaneously adjusting the vertical position of both of said brackets thereby to adjust the rollers relative to the material carried by the belt.

7. In a stippling machine, the combination with a belt for carrying the material to be stippled, of a bracket guiding frame positioned to one side of the belt, a bracket slidably mounted for vertical movement on a saddle adjustably mounted in the bracket, a cylinder shaft demountably journalled in said saddle, and a stippling roller carried by the shaft.

8. .In a stippling machine, the combination with a belt for carrying the material to be sti led, of a bracket idin frame positlO IlEd to one side of the belt, g bracket slidably mounted for vertical movement on said frame, a lifting cam for elevating the bracket, springs between the frame and bracket for maintaining the bracket in en-- gagement with the cam, a saddle mounted in the bracket, a cylinder shaft demountably v means for adjusting the intensity of engagemaintamed as the -ment between "the roller and the fabric whereby a relativel, light contact may be face of the roller wears away. a

-10. In a device for stippling fabric, the combination of a stippling roller havin a sponge-like work face, andmeans for feeding a fabric across said roller in a plane tangent to its work face and in light bearing engagement with its sponge-like work face.

11. In a' stippling machine, the combination of a carryin belt for carrying the material to be stipp ed, and a. stippling roller having an irregular sponge-like work face containing irregular suction pockets for engagin the material on the belt.

In a stippling machine, the combination of two rollers, one of said rollers constituting a color applying means for coating the material to! be stippled and the other tion of two stippling rollers, each provided with a sponge-like work face, the face of one of the rollers being difl'erent from the face of the other roller whereby the stippled effect produced on the material under treatment by oneof the rollers is modified by the action of the other roller.

14. In a stip ling machine, the combination of two ro lers, each rovided with a work face formed of a so sponge, one of said rollers constituting a color applyin roller for coating the material to be stippled and the other roller constituting a means for stippling the coated material.

Signed at New York city, in-the county of New York and State of New York, this 11th day of June, A. D, 1921.

' CHARLES G. HAMPSON Witness Sm A. THORNTON. 

